韩国vlbi网络数据的自动标定

IF 1.1 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
J. Hodgson, Sang-Sung Lee, Guangyao Zhao, J. Algaba, Young-Zoo Yun, T. Jung, D. Byun
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引用次数: 11

摘要

甚长基线干涉测量(VLBI)数据的校准一直是一个耗时的过程。韩国的VLBI网络(KVN)是由三个相同的天线组成的简单阵列。由于同时观察到四个频率,相位解可以从较低的频率转移到较高的频率,以提高相位相干性,从而提高在较高频率下的灵敏度。由于阵列的均匀性,KVN也非常适合自动校准。在本文中,我们描述了使用KVN管道对单极化KVN数据的自动校准,并将结果与人工简化的VLBI数据进行了比较。我们发现使用相位转移的流水线数据比不使用相位转移的手动简化数据集产生更好的结果。此外,我们将管道结果与手动减少的相转移数据集进行了比较,发现结果是相同的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
THE AUTOMATIC CALIBRATION OF KOREAN VLBI NETWORK DATA
The calibration of Very Long Baseline Interferometry (VLBI) data has long been a time consuming process. The Korean VLBI Network (KVN) is a simple array consisting of three identical antennas. Because four frequencies are observed simultaneously, phase solutions can be transferred from lower frequencies to higher frequencies in order to improve phase coherence and hence sensitivity at higher frequencies. Due to the homogeneous nature of the array, the KVN is also well suited for automatic calibration. In this paper we describe the automatic calibration of single-polarisation KVN data using the KVN Pipeline and comparing the results against VLBI data that has been manually reduced. We find that the pipelined data using phase transfer produces better results than a manually reduced dataset not using the phase transfer. Additionally we compared the pipeline results with a manually reduced phase-transferred dataset and found the results to be identical.
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来源期刊
Journal of the Korean Astronomical Society
Journal of the Korean Astronomical Society 地学天文-天文与天体物理
CiteScore
1.30
自引率
10.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: JKAS is an international scientific journal publishing papers in all fields of astronomy and astrophysics. All manuscripts are subject to the scrutiny of referees. Manuscripts submitted to JKAS must comply with the ethics policy of JKAS. Six regular issues are published each year on February 28, April 30, June 30, August 31, October 31, and December 31. One year''s issues compose one volume.
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